I just accessed "Trusted Voice" via the Google app with the instructions I wrote out above. I just went back into Google setting just now and the option is there to turn on/off.
I think that slight BT lag may be common, if not "normal." My Nexus 6P is paired with my car's Bluetooth sound system, and when I play a game in the car, playing the sound over the sound system, the sound effects have a split-second lag (which makes it pretty difficult playing certain games!).
Yup, watching movies over BT with ANY of my devices has a slight lag. Just listen to music over BT and you won't have problems, lol![]()